852 CDUS46 KMTR 180845 CLIAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1245 AM PST WED DEC 18 2019 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 17 2019... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1998 TO 2019 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 53 244 PM 66 2017 55 -2 58 2000 MINIMUM 42 1245 AM 24 2008 36 6 41 AVERAGE 48 45 3 50 PRECIPITATION (IN) YESTERDAY 0.00 0.01 MONTH TO DATE 3.05 1.36 SINCE OCT 1 3.86 2.62 SINCE JAN 1 26.52 15.39 DEGREE DAYS HEATING YESTERDAY 17 15 MONTH TO DATE 215 256 SINCE DEC 1 215 256 SINCE JUL 1 815 823 COOLING YESTERDAY 0 0 MONTH TO DATE 0 0 SINCE DEC 1 0 0 SINCE JAN 1 346 182 .................................................................. WIND (MPH) RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION E (80) HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION E (90) HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION E (90) AVERAGE WIND SPEED 12.2 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 73 1200 AM LOWEST 50 1200 PM AVERAGE 62 .......................................................... THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 55 63 2017 MINIMUM TEMPERATURE (F) 36 21 2006 SUNRISE AND SUNSET DECEMBER 18 2019......SUNRISE 720 AM PST SUNSET 451 PM PST DECEMBER 19 2019......SUNRISE 721 AM PST SUNSET 451 PM PST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$